Photographic-developing apparatus



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S U. T A R A P D'. A2 2 Rmm En.. Tw ww. Smm. Jvwm H1 um n o 3 T 0 m 2- F 5 l l 7 l Patented Dec. 1, 1925.

UNITED STATES JACOB SUMTER, 0F NEVI `YORK, N. Y.

PHOTOGRAPHIGDEVELOPING APPARATUS.

Application filed February 3, 1922. Serial No. 533,751.

T 0 all whom t may concern Be it known that I, JACOB Soriana, citizen of the United States, residing at New York, county of Queens, State of New York, have invented certain new and useful Improvements in Photographic-Developing Apparatus, of which the following is a specification.

The principal object of this invention is to provide improved apparatus for treating photographicfilms without handling them or exposing them to the light andwithout the necessity of using a dark room. The film with its protective paper is wound on a revolvable drum. The lower portion of the drum dips into a bath of the proper solution, so that when the drum is revolved the various parts of the film are passed through the bath. The drum and the tank holding the bath are contained in a box which is light proof except for an inspection window of non-actinic glass. A feature of the apparatus is that it is so constructed that the liquid in it can be changed without the necessity7 of removing the tank or opening the box. The drum can carry any length of film up to its capacity as well as films of various widths. Simplicity of construction is also an important object.

I attain these objects by the mechanism illustrated in the accompanying drawing.

Figure 1 is a plan of the top of my device. Figure 2 is a vertical longitudinal section through the apparatus taken along the line 2-2 of Figure 3. Figure 3 is a cross section taken along the line 3-3 of Figure 2. Figure 4 is a ront elevation.

Mounted in a casing or box l is the drum 2 which consists of two circular plates 3 lcarried by a flanged sleeve 4; the circular plates 3 carrying near their edges a series of rolls 5. Shaft 6 is rotatably mounted in box 1 and carries fixed to it sleeve 4 of drum 2. On one end of shaft 6 is fastened the crank 7. When crank 7 is turned drum 2 is revolved. The lower side of drum 2 dips into tank 8 which holds the developing or fixing bath.

Rolls 5 which are rotatably mounted between plates 3, are formed with two diameters, the cent-ral portion being of a smaller diameter than the two end portions. This is to enable filmsof dierent widths to be used` The narrower films fit on the smaller diameter central portion while the wider ones span across the central portion and are carried by the end portions.

The film cartridge 28 is placed in drum 2 and is rotatably held between plates 3 by the usual spring mechanism for holding film cartridges in cameras. n Drum 2 also carries a reel `9 upon which tape 10 is adapted to be wound. Tape 10 is led from reel 9 between guide rollers 26 over rolls 5 up to a point where the catch 11 at its end is fastened to the protecting paper of film 12. Pin 13 is held in a bearing rotatably mounted in the right hand plate 3. This bearing serves to hold one end of reel 9 and with pin 13 acts to serve as a winding key as is common in roll film cameras. Knob 14 is mounted in the wall of box 1 at the same radial distance out from the center of shaft 6 as is reel 9. Knob 14 has a smaller central shank portion enabling it to be moved in and out from the face of box 1. l/Vhen knob 14 is pushed in, its inner end is adapted to engage pin 13 on reel 9. Turning knob 14 causes reel 9 to turn. Vhen it is desired to hold knob 14 out of engagement with reel 9, leaf 15 carried by box 1, is turned down so as to rest on the shank of knob 14.

Box 1 carries an orange or red glass window 16 to enable the operator to observe conditions inside the apparatus when in use. At the top of box 1 is located a hinged door 17, while at the side just above tank 8 is a door 18. Door 18 is held in place by a removable rod 19, which is adapted to slide through rings 20, the two end ones being fastened to box 1 and the central one to door 18.

To the lower end of tank 8 is fastened a drain-pipe 22 provided with stop-cock 21. An inflow pipe 23 carrying funnel 24 is located adjacent to the upper end of tank 8.

In operation, the door 17 is' lifted open and the film cartridge 28 is inserted in drum 2. The protecting paper of the cartridge is unwound a bit and passed between guide rolls 25. Tape 10 is caused to pass over rolls 5 by holding one end of it in the hand and turning drum 2 by crank 7 until the end ofthe protecting paper is reached. Tape 10 is then'fastened to the protecting paper by means of catch 11. Drum 2 is then rotated so as to bring reel 9 opposite knob 14. Knob 14 is pushed in to engage pin 13, leaf 15 having first been lifted. Now

door 17 is closed. Knobl itil' is nonT rotated so as toV Wind tape 1"() on reel 9 until the entire length of film 12 With its protectingl paper is Wrapped around drum 2 ready for developing. Knob lll is then pulled out and locked in its outer position by pressing down leaf 15. Developing solution is introduced into tank 8 through funnel 24 and pipe 23. Drum 2 is novv rotated by turning crank 7 until the desired amount of development is obtained. DripI plates 27 are provided to lead'y back any of the solution lifted out of the tank. Y

Opening stop-cock 21 drains ofi the developing. solution. VVa'shing Water is novv introduced into tank 81A through funnel 24 Yand drum 2r isV revolved againlong enough to Wash the film. nstead of introducing just enoughv of theivashing Water'to' fill the tank andI keeping stop-cock 21 closed',` the Washing canlbe` effected by letting the Water constantly lifovv in through the fun-nei and empty out through they open stop-cock.

l After the wv'ashingpthe ixing'solution is introduced into( the tank and the drum rotated until thev iiXi-ng is completed. After going through the Washing operation again, the filmA is removed' from the' apparatus.

I. In a photographic developing appa:- ratus7 the combination` of acasing, a re'- volv'able druml in saiid-- casing, means fory rol` tatably`v mounting" film'A cartridge on the drum, a 'reel rotatably mounted onA said drum, a". length of flexible ifnaterial adapted to be wound on said reel and around said drum, said length having fastening means enabling it to pull on the film, whereby when the reel is rotated the iil-m is caused to be pulled around said drurn.

2. In a photographic develo'ping" appaira'tus, a.' casi'g',. a revolvable d'ium iin said casing said drum having its periphery formed by va plurality of spaced ro'llsveaclfi of said rolls beingy formed withl a2 vshank having a pluralityl of diameters to adn'iit of films of different Widths being Woundvon` the drum` and means for Winding the hlm on said drum While the casing is closed.

3:. In a photographic developing yapparatus, thercombination of a casing, a revo'llvabledrum in saiid casing, mea-ns for Wrapping the' film around said drum Without opening the casing',v a tank adapted to hold a bath into which said drum dips whereby as said drum is rotated successive portions of the film are passed through'v the bath and separate inflio'iv andoutfl'o'vv devices provided for said tank adapted t'o permit charging or dischargiirgl Without the ne'cesf Ysity of tilting the tank.

4i. In a Vphotographic developing apparatus, the combi-nation of a casing, a revolvable drum in said casing, means for Wrapping the film around said drum Without opening the casing7 a tank adapted to hold a bath into which said drum dips whereby as said drum is rotated successive portions of the film are passed through the bath, and means in operative relation to said tank suitably constructed to permit charging and discharging of thel tank Without' the necessity of tilting it.

5. In a' photographic developing appar'a'tus, the combination of a casing', a r'e'- volvable drum in' sai-di casing, means for Wrapping the' film around said drum With"- outopenii'igl the casing, a tank adaptedto hold a bath into Which said drum dips Where-bly as said drum is rotated successive portions of the film are passed through the CII batir, andy means in operative relation toY said t'a-nksuitably constructed to permit a con ti'uuous flow of 'uid through the tank.

6; In' a photographic developing appa ratas; the' combination of a casing', a revol'v'able d 1um in' said casing, means for Wrapping the iii-m around' said drum Without opening4 the casing, a tank adapted to hold ai bath into which said drum dips whereby as said drum is rotated successive portions of the hlm are passed through the bath, an inflow provided' with a funnel and anI outflow provided witha stop-cock in operative relati'onto said tank for charging and' discharging it.

7.111 a' ph'otographic` developing appa;- ratus,A the combination of a casing7 a relvoivabl'ey drum mounted in said casing, said drum having its periphery formed by a plurality of spaced' rol'ls, means for rotatably mounting a film' cartridge on the drum', a reell rotatably mouifi'ted onv said'V drum and a length". of tape adapted to be Wound ony said reel, safi'd tape carrying fastening means enabling il; to pull on the film, whereby when the reel is rotated the tape causes the filmV to be pulled around said drum and univound from the' cartridge.v l

8'. In aI photographic developing Aapparatus, the combination of a casing, ai revol'vable drui'n in said casing, means for' ro'- tatably mount-ing a film cartridge on the drum7 a ree'll rotatably mounted on said drum, a length of flexible material adapted to be Wound on said reell and around said drum', said length carrying fastening means .enabling it tio pull' on the lil'in` whereby when the reel is rotated the hlin is caused to be pulled around said drum and' a rotatable handle, mounted in' said casing adapted to move* into and out of engagement with said reel, for' rotating said reel.

JACOB SUMTER. 

